Crushing-rolls.



PATEN'I'ED MAY 5,1903. J. 11. MONTGOMERY.

GRUSHING ROLLS.

APPLIQATION FILED we. 11. 1902. no menu. a sums-sum 1.

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PATBNTED MAY 5, 1903 J. MONTGOMERY. GBUSHING ROLLS. 4PPLIOATION FILE]? AUG. 11. 1902.

3 SHEETS-SHEET 8.

.10 MODEL.

UNITED STATES? Patented. May 5, 1903. PATENT OFFICE.

JAMES H. MONTGOMERY, OF DENVER, COLORADO.

CRUSHlNG-ROLLS.

SPECIFICATION forming part of Letters Patent No. 727,177, dated May. 5, 1903. Application filed Augustsll, 1902. Serial No. 119,311. (No model.)

To all whowt it may concern:

Be it known that I, JAMES H. MONTGOMERY, a citizen of the United States of America, residing at Denver, in the county of Arapahoe and State of Colorado, have invented a new and useful Improvement in Crushing-Rolls, of which the following is a specification.

My invention relates to improvements in crushing-rolls, more particularly those used for crushing rocks, clays, andlike materials.

The objects of my improvements are to provide rolls with housings pivotally'connected to a base-frame and mechanism to prevent one housing advancing orreced'ing withoutthe other, each housing carrying a crushingroll and springs and adjustin -rods. to'keep the rolls in crushing contact. objects by the mechanism illustrated in the accompanying drawings on three sheets, in which- Figure 1 is a side view. Fig. 2 is an end view. Fig. 3 is a plan; Fig. 4, a cross-section through the center longitudinally. Fig. 5 shows the rolls when open for inspection and repairs; Fig. 6, an enlarged section, of the lug M, showing spring-rod I and adjustments; Fig. 7, an enlarged section of the box B, showing method of adjusting; Fig. 8, the springrod and springs.

Similar letters refer to similarparts in'the several views.

The rolls are constructedwith a base-frame A, on one end of wh'i'chare'theiboxes B B and, on the opposite end the'boxes B B, whichare,

adjustable, so the rolls may more easily be placed in a parallel position. I prefer to make this box as shown in enlarged section in Fig. 7. The box 13 has the shaft 0 placed in position, the shims R, of which a sufficient number are used to bring the shaft 0 exactly parallel with the shaft 0, resting in the boxes B B in the opposite end of the frame A. The key Q is then drawn tight with the nuts Q, which firmly holds the shaft and shims in place.

The roll-supporting housings D D are so constructed that their backs andsides form a dust-proof housing, which prevents dust from filling the room when crushing dry material. They are also provided with j ournalboxes E E on their lower part, which, together with the shafts VC 0 and boxes B B I attain these.

and B B, form the hinges, which permit the housings D D being laid back, as shown in Fig. 5, for inspection of the rolls, repairing, or cleaning.

The rolls Z are placed inside the roll-supporting housings D D, and their shafts Y are journaled in the boxes G G G G on the sides of the roll-supporting housing D, being held in place by the caps G G. To provide for the rolls advancing and receding in unison, the segmental gear-teeth F F F on each side of the roll-carrying housings D are so constructed that the pitch-lines formed by the radial lines radiating frorn the center of the =boxes E are tangent.

Thus the rolls must advance and recede while in a parallel position with each oth'er,the housing hinging on the shaft 0. l The rolls are held in crushing contact by the springs J and the spring rods I, which pass through theslot-holes inthe lugs M on the roll-housings D andshown' more particularly in enlarged section, Fig. On these spring-rods and between the nuts L and the lugs M is a rubber cushion X to take up the shock of the recoil of the rolls after the passage of the gads, pick-points, and other uncrushable substances that may accidentally be left'in the ore.

The feed-hopper U is provided with supporting-brackets T on eac'hside, which rest upon the roll-carrying .housings D," its point projecting below and tonear the point of conta'ot of the rolls-1 i V.

The rolls are drivenby band-wheels placed on their" shafts Y and shown in the drawings in Fig. 3 and travel in the direction of the arrow-points. When the rolls are in operation, the spring-bars I and springs J draw the rolls together. The exact size to which the material is to be crushed to is governed by distance. The rolls are held apart by the adjusting-nuts L and L, and when by accident uncrushable substances-such as pickpoints, gads, &o.be fed with the other material to the rolls the'springs- J -will; permit the receding of the rolls andafter thepassage returning the rolls to their norm'al position, the shock of the recoil being "relieved" by the rubber cushions X, the roll-housings operating in unison and being held in perfect alinement by the segment of gears F F F.

Having described my invention and its operation, what I claim as new, and desire to secure by Letters Patent, is

1. A base-frame A, having boxes B B on one end, and boxes B B on the opposite end, and carrying shafts 0; two movable roll-carrying housings D, having the boxes E on their lower part, and the lugs M on their upper,

ings, each pivotally secured to the base-frame and each carrying a crushing-roll, segmental gear-teeth F F F on each housing, thespringrods I, springs J, lugs M, nuts L and L and the rubber cushions X, all substantially as described and for-the purposes set forth.

4. The combination of a base-frame; two movable roll-carrying housings, each carrying a crushing-roll and each pivot-ally connected to the base-frame; spring-rods and springs for drawing the housings together,

thereby holding the rolls in contact and adapted to be laid back for inspection when the spring-rods and springs are removed,as shown in Fig. 5, all substantially as set forth and described.

JAMES H. MONTGOMERY.

\Vitnesses:

.H. A. SATTERFIELD,

F. W. J ACKSON. 

